The Dwarven House is the main habitation building of the dwarves. These underground houses are hidden in the mountains with a dwarven door as an entrance (which looks like stone). Thus it it easier to find at night. The houses can be seen as a Dwarven equivalent to Hobbit holes; a standalone building with some inhabitants, food, crafting tables, and other general-purpose items. This particular Dwarf house spawns in the Iron Hills and Erebor biomes, but it is akin to Blue Mountains houses which spawn in the Blue Mountains biome, and house Blue Mountains Dwarves.